Warp-stop-motion mechanism.



PATENTED MAY 7, 1907.

H. COTE. WARP STOP MOTION MECHANISM.

APPLICATION FILED JAN. 7, 1907.

UNITED STATES PATENT oEEIoE. I

HENRY COTE, OF WEST WARREN, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

Specification of Letters Patent.

Patented May 7, 1907.

Application filed January 7, 1907. Serial No. 351,070.

To all whom it may concern.-

Be it known that I, HENRY CoTE, a citizen of the United States, residing in West Warren, county of Worcester, State of Massachusetts, have invented an Improvement in VVarp-Stop-Motiori Mechanism, of which the following description, in connection with. the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object the production of a simple and efficient warp stop motion mechanism particularly .adapted for looms, whereby upon the failure of a warpthrfiad loom stoppage is effected automat- 10a In the construction hereinafter described in which my present invention is embodied the warp-threads co-operate with angularly movable, individual detectors and normally the latter are held in inoperative position, but upon failure of a warp-thread its detector is released and turns into abnormal position to thereby engage a vibratable feeler. Such engagement serves to arrest the feeler and through suitable means to cause the stoppage of the loom.

The detectors are provided with open warp-eyes, so constructed that the warpthreads may beeasily inserted therein without necessitating drawing in, the entrance to the warp-eye preventing the thread from coming out, should the detector jump.

A released detector moves into such position with relation to its fellows that the posi tion of the faulty thread is quickly and plainly indicated, thereby greatly assisting the weaver in repairing the fault.

The various novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the following claims.

Figure 1 is a transverse sectional view of a sufficient ortion of a loom, with one practical embo iment of my present invention applied thereto; Fig. 2 is an enlarged perspecwhip-roll.

tive view of one of the stopmotion-controllingdetectors.

eferring to Fig- 1, the lay 1, harnesses 2, lease-rods 3, and whip-roll or bar 4, may be and are all of usual or well known construction, and the detectors are applied to the warp-threads 5 between the lease-rods and A bracket 6 is secured to each loom-side and sustains a transverse rod or sup ort 7 located below the warps and back of the lease-rods, and on this support are loosely mounted a series of detectors, angularly movable thereon. A bar 8 also carried by the brackets 6 bears upon the tops of the warp-threads just back of the lease-rods and maintains the sheet of warp fiat and in proper condition to co-operate with the detectors, which latter are preferably made of thin, flat sheet-metal stamped or otherwise shaped to the desired form.

In accordance with my present invention each detector comprises a straight body portion 9, apertured at 10, l ig. 2, nearer one end,

.to receive loosely the support 7, and upturned at such end at 11, the part or head 11 having an upright elongated warp-eye 12, herein shown as substantially at right angles to the length of the body 9.

A. narrow inclined slot 13 leads from the front edge of the head 11 upward to the upper end of the warp-eye, at an acute angle to the length of the eye; and through this slot the warp-thread is introduced to the eye 12, thereby obviating the drawing in of the thread, and facilitating the work of the attendant. By this construction of the slot and eye, the thread cannot leave the eye and pass out through the slot, should the detector vibrate or jump during the operation of'the loom, for in order to remove the thread from the eye, it must be moved upward to the upper end of the eye and then downward at an angle to the length of the eye.

At the o posite or rear end of the body I A provide a epending and rearwardly inclined foot 14, the weight of the body and foot back of the aperture 10 being greater than the weight in front of such aperture, so that when free to turn on its support 7 the detector will turn and the foot will descend.

As shown in Fig. 1 the bodies of the detectors normally lie wholly below the sheet of Warp, the heads 11 projecting above the warp, and the individual threads engage the bottoms of the warp-eyes and maintain the detectors in full line position, Fig. 1, with their feet 14 elevated.

A stop, shown as a light rod 15, extended from one to the other bracket 6 over the feet 14, serves to limit the lifting movement of the feet due to pressure of the warp-threads on the warp-eyes.

In front of the feet a rigid bar or plate 16 is held by the brackets, in such position that when a detector is released the front edge of its foot will rest against the rear face of the bar, see dotted lines Fig. 1.

The brackets have mounted thereon a rock-shaft 17 having arms, as 18, to which is secured a feeler 19, the shaft being normally rocked to vibrate the feeler, which moves in a curved path below the bar 16 and the lower ends of the detector feet 14. When, however, a detector is released its foot descends into dotted lines, Fig. 1, and is interposed between the bar 16 and the feeler on its operative or feeling stroke, the movement of the feeler bein thereby arrested, and such arrest is made to effect the operation of suitable stopping mechanism for the loom.

The stopping mechanism and the means for normally vibrating the feeler may be of any well known or suitable character, such for instance as shown in United States Patent No. 622,184, granted to Draper March 28, 1899.

The location of the faulty warp-thread is quickly and plainly indicated by the released detector, for its upturned portion or head 11 is thereupon moved out of alinement with its fellows, as shown in dotted lines Fig. 1.

By the construction herein shown and described the detectors are quick to act when released, the warp-threads are easily applied thereto, and the entire apparatus is simple and directacting.

Having fully described my invention, what I claim as new and desire to secure byLetters Patent is 1. In a warp stop-motion, in combination, a series of detectors each having an upturned portion or head provided with an upright warp-eye having an upwardly inclined en trance slot leading to its upper end at an acute angle to the lengthof the eye and a depending foot, a transverse support loosely extended through each detector nearer its upturned end and on which support the detectors are angularly movable, normal warpthreads actin upon the lower ends of the warp-eyes an maintaining the detector feet elevated, anda vibratable feeler to engage the foot of a detector released by failure of its warp-thread.

2. A detector for warp stop-motions, hav- I ing a thin, flat body apertured to receive a transverse support and terminating at one end in a depending foot, and at its other end upturned and provided with an upright, elongated warp-eye having an inclined slot leading to its upper end, and at an acute angle to the length of the warp-eye.

3. A thin, flat metallic detector forwarp HENRY CGTE.

Witnesses:

VICTOR J. DUFAERNE, EMORY C. SAWYER 

